Boot upper



FIG. 1 is a perspective view of the boot upper showing my new design;

FIG. 2 is a side view as viewed from the right side of FIG. 1;

FIG. 3 is a side view as viewed from the left side of FIG. 1;

FIG. 4 is a front view of FIG. 1;

FIG. 5 is a rear view of FIG. 1;

FIG. 6 is a top plan view of FIG. 1; and,

FIG. 7 is a bottom plan view of FIG. 1.

The portion of the boot upper shown in broken lines forms no part of theclaimed design.

The ornamental design for a “boot upper,” as shown and described.